newlyn



(No Model.)

B. A. NEWLYN.- ELEOTRIGAL RECORDING DEVICE FOR SAFES.

No. 529,938,. Patented Nov. 2'7, 1894.

" NITED STATES "P TENT O FICE.

ROBERT A. NEWLYN, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO GEO. W. HART AND AGNES BOYLAN, OF SAME PLACE.

,ELECTRICAL RECORDING DEVICE FOR SAFES.

SPECIFICATION forming part of Letters Patent No. 529,938, dated November 27,1894. Application filedApril28,1894. Serial No. 509,413. (No model.)

To all whom it may concern.-

Be it known that I, ROBERT A. NEWLYN, residing at Cincinnati, in the county of Hamil ton and State of Ohio, have invented certain new and useful Improvements in Electrical Recording Devices for Safes, of which the following is a specification.

My invention relates to a method of employing electrical recording devices for safes, rooms, or other compartments Where valuables are deposited, so arranged that any disturbance of the safe will interrupt the operation of the recording instrument and give notice thereof at any desired point or station, constituting an effectual burglar alarm.

The features of my invention will be fully set forth in the description of the accompany ing drawings making a part of this specification, in which- Figurel, is an elevation partly in section of my improvement in positionfor use. Fig. 2, is a sectional elevation on line 91:, at, Fig. 1. Fig. 3, is a top plan View of the circuit making and breaking gage.

A represents a safe which is inclosed in an air tight casing or compartment B surrounding the entire safe but sufficiently larger than the safe to leave a jacket space 0.

D represents a register alarm.

E represents the battery.

a, I), represent the circuit wires. Within the register alarm is located any well known receiving and recording device.

F represents the circuit making'and breakin g gage inclosed in a suitable casing G. This gage is constructed like any air pressure gage. H represents the indicator finger operated by the gage when the normal pressure of the atmosphere is disturbed'either by increasing or diminishing the pressure.

I represents one terminal say for the wire a which is insulated or elevated sufficiently above the case of the gage to prevent contact therewith. Wire b has its terminal connection with the finger or pointer H.

As shown in Fig. 3, the terminal I, and the pointer H, are so adjusted that when the normal pressure of the atmosphere is changed ten ounces say by the compression of the air, the finger or pointer H will move around and come into contact with the terminal I, thus making circuit connections at that point. It is immaterial whether this point and terminal are so arranged as to complete the circuit by compression or exhaustion of air. The second circuit connection is made through the spring terminal K and the points or teeth t of the traveling drum L. This drumis formed with a series of pins 25, and in the preferred form it travels longitudinally as it revolves. This is accomplished by means of clock mech anism M with the shaft on of the drum L, for rotary motion. *The longitudinal motion is shown as effected by means of screw threads N on the opposite ends of shaft m which engage with the threaded nut O. Reversing mechanism can of course be employed for moving the. drum back. Now as the drum L revolves terminal K comes successively in con, tact, with each of the pins 25 which makes the circuit and operates the recording instrument in the register alarm box D. The circuit is broken as soon as the contact of any particu lar pin with the terminal K has ceased. Thus as the drum L revolves it is constantly making and breaking the circuit.

The drum L is made to travel longitudinally so as to bring in a great number of cir cuit breaking pins 25. These pins upon the drum may be arranged at such intervals that a message or series of signs Will be recorded by the instrument in the register alarm box D. It is desirable to have the said drum contain asufficient number of pins and the mechanism operating it so that it will register a continuous message for any desired number of hours- It is necessary that the casing of the air gage should either be air tight or else that it be inclosed in an air tight. compart ment, G, with pipe connection 0 to the interior of the gage through said casing.

R represents an air pump connecting with the jacket space 0 around the safe. tomatic circuit making and breaking devices are located Within the air jacket 0, preferably, so that they cannot be tampered with.

1 Mode of operation: The safe is closed and locked in the usual manner. closed which forms an air tight compartment around the safe. The air pump is then operated so as to increase the normal pressure inside of the air gage which moves the finger H of The au- 2 The casing B is IOO the air gage around to make metallic connection with the terminal I. 1 have shown a long terminal so that the air pressure may be increased or diminished as the case may be largely beyond the point of contact so as to insure a permanent connection and prevent accidental breaking of the circuit by deterioration of the condition. The clock work mechanism is started before the case door 13 is closed. Now as soon as the air gage is operated to connect the terminals H and I, the circuit is established and a continuous electrical record is obtained at the recording devices. Of course any number of recording devices maybe employed in the same circuit. Thus one may be located at the police station and another at the cashiers home, or any other desired place; but whenever the artiticial condition of the jacket space C is dis turbed the circuit will be broken and the recording stopped, which is notice or alarm that the safe conditions have been tampered with. It may if desired have any number of drums L to be changed each day so that each is adapted to transmit a different set of signals so that burglars or other unauthorized persons cannot be informed of the character of the message being sent at any time. By this means the tapping of the wires is rendered ineiieetive. The message may be of such length and arrangement that each minute a difierent part is being sent which will enable the interference of the safe to be instantly detected by the point at which the message is interrupted.

It will be readily seen that any desired form of pressure or vacuum gages can be employed to make and break the circuit.

It will be seen that before the safe can be reached the recording of the circuit is broken and the very attempt to tamper with the safe detected before the safe can be reached.

1 claim- 1. The combination with a safe, and an air tight safe protecting compartment, of a pressure-gagelocatedin said compartmentand having a rotary pointer, a fixed terminal adjacent to but insulated from the gage and with which the pointer is adapted to come in contact, an electric circuit connected with said pointer and fixed terminal, a clock controlled circuit making and breaking mechanism located in the same circuit and within the safe compartment, an alarm located in said circuit outside the safe protecting compartment, and means for changing the normal pressure of air in said compartment, substantially as described.

2. The combination witha safe, an air tight safe protecting compartment, and an electric circuit, of a circuit making and breaking pressure-gage located in said compartment, the spring terminal K, the rotary and longitudinally movable drum L actuated by clockwork mechanism and having teeth 25 adapted to make and break contact with said spring terminal, a register alarm located in the circuit outside the safe protecting compartment, and means for changing the normal pressure of air in said compartment, substantially as described.

3. The combination with a safe, and an airtight safe protecting compartment, of a pressure gage located in said compartment and provided with a movable pointer, a fixed terminal with which the pointer is adapted to come in contact, an electric circuit established through the said pointer and terminal, clockcontrolled circuit making and breaking mechanism located in the same circuit and within the safe protecting compartment, a register alarm located in the circuit outside said compartment, and means for changing the normal pressure of air in said compartment, substantially as described.

4. Thelcombination with a safe, an air-tight compartment inclosing the safe, means for changing the pressure within said compartment, an electric circuit, and one or more register alarms located in said circuit outside the safe inclosinglcompartment, of a pressuregage located in the electric circuit within said compartment and provided with a rotary circuit making and breaking pointer actuated by change of pressure, and an automatic clock-controlled circuit making and breaking mechanism located within the safe inclosing compartment and in the same circuit with the pressure gage and the register alarm, substantially as described.

In testimony whereof I have hereunto set my hand.

ROBT. A. NEWLYN.

\Vitnesses:

W. R. WOOD, OLIVER B. KAISER. 

